摘要
建立GMCU2060横梁移动龙门加工中心横梁有限元模型,对横梁进行静动态刚度分析,结果表明:横梁结构中加强筋相对薄弱。提出在其余参数不变的前提下、增加加强筋厚度的改进方案。分析结果表明:在质量不增加的情况下,改进后的横梁在重力作用下的最大变形为0.029 mm,一阶固有频率由96 Hz提高到115 Hz,满足设计指标要求。
A finite element analysis（FEA）model of GMCU2060 gantry machine center crossbeam was built and the static and dynamic stiffness were analyzed.The results show that the strengthening rib is relative weak.An improvement scheme was proposed by increasing thickness of strengthening rib under premises of no changes in other parameters.The analysis results indicate that the maximum deformation of the improved crossbeam is 0.029 mm by the gravitation force under condition of without increasing in mass,and the first order inherent frequency is increased from 96 Hz to 115 Hz,which meet the design requirements.
出处
《机床与液压》
北大核心
2011年第11期131-134,共4页
Machine Tool & Hydraulics
基金
长春市科技计划重点资助项目(08YJ05)
关键词
加工中心
横梁
动态特性
有限元分析
Machining center
Crossbeam
Dynamic characteristic
Finite element analysis
